Oncidium (dancing-lady orchid) likes bright light (no direct sunshine) and moist soil so water as often as necessary to keep the soil from drying out. When the flowers are spent, cut the flowering stalk down. Your orchid will bloom again after it develops a new flower stalk. You can feed your orchid every 2-3 weeks with a quarter strength dilution of a water soluable fertilizer such as Miracle Gro, Peter's or Shultz's.